A surface layer and a cold-hardening depth as basic parameters ensuring quality of low-rigid shafts are analyzed. A value of an interference area depending on a grain size which is a criterion for the definition of strengthened layer depth is established. The experimental results on the definition of quality basic parameters for a surface layer at the strengthening for the depth of an interference area are shown.
surface layer, interference area, strengthening depth, residual stresses. hardness.
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